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Old 11-20-2017, 06:43 PM   #1
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Slide-out roof replacement - completed

A few weeks ago I replaced the roof on one of our 5th wheel slides. I noticed a soft spot in one corner of the slide out roof when up on the trailer roof inspecting the slide out seals. I ordered the repair materials ahead of time, waited for perfect weather and decided to take the plunge and do the roof repair on the slide out. The repair was fairly easy but it did take some several hours to complete. Once I pulled off the EPDM material off the slide out roof I found the plywood in the corner was definitely in need of replacement. I also noticed two other spots that showed evidence of a small leak just starting around 2 screws. No other damage beyond the roof plywood. It appears the main leak was around 2 or 3 screws plus the EPDM material showed signs of being torn along the edge of the metal slide out trim. The EPDM material was very weak at this spot and I tore the material while removing it (see first photo). I did notice the screws that hold the metal trim around the outside of the slide out were not sealed on top so I used flexible roof sealant and made sure each screw was sealed completely. Under the metal trim I used new butyl tape. I then used the flexible sealant to seal along the edge of the metal trim to the EPDM. I also replaced all the upper D style slide out seals and checked the other slide outs and sealed all screw heads with the flexible sealant.

Total cost for all new upper slide out seals (3 slides), EPDM material, plywood, EPDM adhesive, eternabond tape, flexible sealant, etc was approximately $500. This is a job that can be completed by someone with general handyman skills and a few tools. No need to spend thousands at the RV repair center.
Attached Images
File Type: jpg roof1.jpg (336.0 KB, 54 views)
File Type: jpg roof2.jpg (244.9 KB, 50 views)
File Type: jpg roof3.jpg (248.7 KB, 51 views)
File Type: jpg roof4.jpg (143.6 KB, 49 views)
File Type: jpg roof5.jpg (130.7 KB, 64 views)
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Old 11-20-2017, 06:56 PM   #2
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That's a great job. My only suggestion would be to cover the seam with Eternabond tape. That will totally seal and prevent future cracking along the flexible caulk seam.
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Old 11-21-2017, 05:34 AM   #3
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Came out very good. Saved a lot of money also.
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Old 11-21-2017, 06:39 AM   #4
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Looks like you did an excellent job. Congratulations for tackling it and getting it done yourself.
I agree with mark5w, to finish up by applying eternabond tape on the seams.

Did you have to replace the insulation in the roof?
How thick was the stuff that was in there?
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Old 11-21-2017, 07:39 AM   #5
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Excellent job...I have to agree with Mark & Lloyd needs a little tape to finish it off...
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Old 11-21-2017, 06:04 PM   #6
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The thickness of the roof is only about 1 1/2". I didn't replace the insulation it was all good.

I agree with sealing the seam with enternabond, I purchased a 50' roll and have been thinking about going back and sealing all my slides with the tape.

Thanks for confirming my thoughts about the using the tape.
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Old 11-28-2017, 06:10 AM   #7
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Curious.....did you have to remove the facia on the slide out? I may have to do this in the future.


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Old 11-28-2017, 06:22 PM   #8
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Yes, the facia was removed on the inside and outside of the slide. You will need to do this to properly lay the EPDM material. I only had to remove top facia on the outside. One suggestion that I can make is to tape an old towel over the side facia, they have sharp edges and it comes to a very sharp point. Ask me how I know this, the 5" long cut on my arm is still healing. It doesn't take much contact to create a lot of pain. I even looked at those sharp corners when I started and remember convincing myself that I wouldn't need to cover the sharp corners. I was wrong.
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Old 11-30-2017, 11:06 AM   #9
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One more question.....is the facia just nailed on? Just pry it off?

I’ve commented a couple times on here about our roof issues. Alpha Ply. All our slides have or will have roof repair tape where the rubber wiper contacts the roof. Plan to build an RV Port at home. Would like to redo our slides then. Attached a picture of our slide facia.




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Old 12-01-2017, 04:08 AM   #10
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Yes, the facia is just nailed on. Very easy to remove, there was not many nails holding my facia on. I secured with additional nails when I re-installed.
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Old 12-05-2017, 05:55 PM   #11
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Added the eternabond tape to the seams this past weekend. Now 3 layers to protect against leaks. Tape, flexible sealant & butyl tape. I added the tape to all of the slide-out seams.

Thanks for the suggestion.
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Old 12-05-2017, 06:17 PM   #12
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Great job. The Eternabond makes it a totally permanent fix.
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Old 12-22-2017, 07:41 AM   #13
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Excellent job, and great subsequent discussion, this is what makes this forum such a brilliant resource.

Thanks everyone.

And Merry Christmas to all
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